Few verses have separated Christians as this one.  Everyone debates what 'speaking in other tongues' meant but I lean on what an old Pentecostal friend once told me.  It's not what we say or how high you jump.  It's what you do when you hit the ground.  If the Spirit of God is giving you utterance, it will be blessed.  These words birthed the church.  What will His words do in your life?

Ask Him.  Michael.